Congratulations on staying paleo for a year and getting close to your goal weight! I hope your PCOS is also resolved.
It's possible that while you were losing the weight, your body was getting a significant fraction of its energy from burning stored fat. Now that you're getting close to your goal weight, less fat may be available, so you may need to get more energy from your diet. In particular, eating fattier meats may be in order.
Can you say what your original weight was and what your weight is now? Also, a typical day's food might be useful. These things might also be useful information for other women who use paleo for weight loss.